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Impact of Length or Relevance of Questionnaires on Attrition in Online Trials: Randomized Controlled Trial

McCambridge, Jim, Kalaitzaki, Eleftheria, White, Ian R and 6 more

Journal of Medical Internet Research · 2011

doi:10.2196/jmir.1733

Cited by papers we hold 2

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Strategies to improve retention in randomised trials: a Cochrane systematic review and meta-analysis · 2014
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